Hypertext Webster Gateway: "evolvent"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Involute \In"vo*lute\, n. (Geom.)
A curve traced by the end of a string wound upon another
curve, or unwound from it; -- called also {evolvent}. See
{Evolute}.
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Evolvent \E*volv"ent\, n. [L. evolvents. -entis, unrolling, p.
pr. of evolvere.] (Geom.)
The involute of a curve. See {Involute}, and {Evolute}.
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